I'm using digital compact cameras for exactly 10 years, and for me one big advantage is the silent shutter of these. Even the shutter of my Sony R1 (sensor size is APS) is (almost) inaudible, so I never had a problem taking photos even in classical concerts.

I waited for years for a camera like the G1/GH1/EP1, but when I tried them in the store I was indefinitely disappointed - they sound almost like a DSLR.

I have little hope about the GF1, but not much.

Can somebody explain WHY these shutters are so loud? Or WHY these cameras need such a type of shutter?